Chuck for broom-barrels



(No Model.

J. H. DAKIN.

CHUCK FOR BROOM BARRELS.

No. 354,540. Patented Dec. 21, 1886.

UNITED STATES PATENT OFFICE.

JOHN H. DAKIN, OF SOHENFGTADY, NINV YORK. I

CHUCK FORBROOM-BARRELS.

" SPECIFICATION forming part of Letters Patent No. 354,540, datedDecember 21, 1886.

Application filed November 23, 1885. Serial No. 183,763.

To all whom it may concern:

Be itknown that I, JOHN H. DAKIN, a citizen of the United States,residing at Schenectady, in the county of Schenectady and State of NewYork, have invented certain new and useful Improvements in Chucks forBroom- Barrels; and I do hereby declare the following to bea full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain new and useful improvements in chucksfor broom-barrels, and particularly to novel means for firmly clampingand holding the broom-handle therein during the process of winding thecord or wire which secures the broom-corn upon the said handle.

Referring to the accompanying drawings, illustrative of my invention,Figure 1 represents a side elevation of my improved broombarrel chuck.Fig. 2 represents a longitudinal section upon the line 2 2, Fig. 3. Fig.3 represents a front elevation of the same, the annular plate in frontof the clamp-lugs being removed to better illustrate the disposition ofparts. Fig. 4 represents in detail (side elevation, bottom view, andplan) the shape of the clamping-pieces.

Similar letters of reference indicate similar parts throughout theseveral views.

A indicates a hollow broom-barrel, shown in Figs. 1 and 2, for sake ofconvenience, as partially broken away.

Upon its exterior surface the broom-barrel is provided with a projectingscrew-thread, 0, cut from left to right. In front of the screwthread thebarrel tapers toward its outer end, where it is surrounded by thetapering collar D, firmly attached to it by screws ff, as shown, orotherwise. From its outer end and extending inwardly the barrel isprovided with three equidistant longitudinal slots or recesses, cutcompletely through the walls of the barrel up to the line 3 3, Fig. 2,and from that line gradually decreasing in depth to the line 4 4, san1efigure. Within each of these recesses fits one of three clamping-pieces,E E E. (Shown in detail in Fig. 4.) Each piece is hollowed out in suchmanner that when inserted within its appropriate recess it will form acontinuation (No model.)

of the smooth inner surface of the barrel. It is provided with flanges FF, resting upon corresponding flanges, G G, of the divided end branches,H H H, of the barrel.

The portion I rests within the tapering surface groove of the barrel. Atits rear end it has a lug, K, extending above its surface. This lugabuts against and lies within an annular seat or recess, L, in the faceof a hand-wheel, M, provided with an internal screw-thread e11- gagingwith the screw-thread O of the barrel. The lugs of the variousclamping-pieces are held in place within the recess L by means of theretaining-ring N,screwed to the hub of the hand-wheel.

The parts of the device are put together as follows: The hand-wheel M isfirst passed over the end of the barrel and screwed in place. Theclamping-pieces are then set within their recesses, their lugs I restingwithin the seat L, and the retaining-ring N is then slipped on andscrewed fast to the wheel-hub. The conical collar D is then attached bymeans of the screws ff to the end branches, H II E[.

In order to operate the clamping device the broom-handle is inserted, asin Fig. 1. The wheel M is then turned toward the right, and, travelingoutwardly upon the screw-thread C, pushes the clamping-pieces I throughthe tapering collar D. As the pieces advance they are brought nearer andnearer each other, grasping the broom-handle equally on allsides andclamping it with a force dependent upon the distance traveled by thehand-wheel. Any required degree of clamping action can be thus securedby the operator with the exercise of comparatively little power.

The handle, after the broom is wound, may be released at once by asimple reversal of the wheels motion, and will be found to be unmarredby the clamping-pieccsan important consideration in the manufacture ofthe better class of brooms. The whole constitutes a device of simple andeconomical construction, readily operated, and easily repaired, and oftried efficiency.

It is evident that by obvious alteration within the ability of theskilled mechanic the wheel M may be provided with a smooth bore andconnected with a hand or foot lever, so as to be slid back and forthover the broom-barrel and operate the clamping-pieces in like manner asabove described. In someinstances I contemplate employing thisalternative structure, my invention being of a generic character so faras the means for throwing out and retracting the clamping-pieces isconcerned.

Having thus described my invention,what I claim, and desire to secure byLetters Patent, 1s

1. The combination, with the main body A of a broo1n-barrel chuck, ofthe traveling wheel M, the tapering collar D, and clampingpieces E E E,connected with said wheel and passing through the collar, substantiallyas described.

2. The combination, with the main body A of a broon1-barrel chuck, saidmain body having the exterior screw-thread, O, and being cut away orslotted at its outer end, of the traveling wheel M, having aninteriorly-threaded hub, the sliding clamping-pieces E E E, fittingwithin the slots of the main body, and the tapering collar D, throughwhich the pieces slide during the forward and backward movements of thewheel, substantially as described.

3. The combination, with the main body A of a broom-barrel chuck, havingat its outer ends recesses or slots, as described, of the slidingclamping-pieces E E E, fitting within said recesses and having lugs K,the tapering collar D, the hand-wheel M, having a hub recessed at L forthe reception of the lugs K of the clamping-pieces, and theholding-plate N, substantially as described.

' JOHN H. DAKIN. Witnesses:

EDWARD HIBBARD, BENTLEY SNITs.

